Lol Autophile bro!
You really made a Hitchcock thriller out of it.....hahahahaha!
Bro....I'm staying the course so far with the 1.5T as booked, but your metaphoric description above DID momentarily shake the heck out of me! Lol!
You don't need to be on "hunt" for HOBC always.
If you have the habit of filling your tank full every time it's on the 1/2 mark, you only need to do the "hunt" above every second fill!
You can fill regular on 1/2 thank of HOBC and still be beyond 91 Ron!
There'd be only one reason why I'd change over to 1.8 at time of full payment........If they suckin' hell tell me categorically that warranty would be void with use of 87 rons!